Reduction Experiment Run Up Heights of Solitary Wave by Submerged Breakwater

Abstract

Solitary wave is a typical nonlinear wave and if a height of wave is given, a wave form is determined and it can propagate long distance without deformation, of all the waves, the solitary wave has the largest wave, which is also suitable for studies of tsunami run up height. In this paper, we used wave form of ultrasound type to measure the wave height change and waveform from the wave machine, The measured values were in good agreement with the solitary waves shown in the numerical analysis. In addition, In order to verify the accuracy of the measurement of the run up height of the solitary waves incident on various slopes, the experimental values were compared with the existing height prediction equations, the reduction ratio according to the change of the length of single arrayed submerged breakwater and the reduction rate according to the change in separation distance of 2-rows or more arrayed submerged breakwater.